Method and device for controlling wireless resource assignment

Abstract

A method for controlling radio resource assignment in a radio communication system obtains a radio communication variable broadcast from a base station to a terminal, and then assigns dynamically multiple carriers to a plurality of sub-channels based on the obtained radio communication variable.

1 . A method for controlling radio resource assignment in a radio communication system, comprising:
 obtaining a radio communication variable broadcast from a base station to a terminal, and   assigning dynamically multiple carriers to a plurality of sub-channels based on the obtained radio communication variable.   
     
     
         2 . The method of  claim 1 , wherein said obtaining comprises obtaining a radio resource assignment variable transmitted from the base station to the terminal, and
 wherein said assigning comprises assigning dynamically the multiple carriers to the plurality of sub-channels based on the obtained radio resource assignment variable and the radio communication variable.   
     
     
         3 . The method of  claim 2 , wherein said assigning comprises:
 preparing a prescribed sequence generating function having the radio resource assignment variable and the radio communication variable as its variables, and   generating a series of sequences indicating the carriers to be assigned to the plurality of sub-channels in accordance with the radio resource assignment variable and the radio communication variable and the prescribed sequence generating function.   
     
     
         4 . The method of  claim 3 , wherein the prescribed sequence generating function is a sequence generating function in accordance with one of a sub-band carrier assignment scheme, an interleaved carrier assignment scheme, or a flexible carrier assignment scheme. 
     
     
         5 . The method of  claim 1 , wherein said radio communication variable is a time-varying variable. 
     
     
         6 . The method of  claim 5 , wherein said radio communication variable includes a number assigned to a data transmission unit of the radio communication system. 
     
     
         7 . The method of  claim 6 , wherein said radio communication variable includes a frame number. 
     
     
         8 . The method of  claim 1 , wherein the radio communication system using the multiple carriers is a system using OFDMA technology. 
     
     
         9 . The method of  claim 1 , wherein said radio communication system uses a HARQ method and
 said assigning is performed when a retransmission is performed due to an occurrence of a transmission error.   
     
     
         10 . The method of  claim 1 , wherein said assigning comprises:
 performing an arithmetic operation on the obtained variable, and   assigning the multiple carriers to the plurality of sub-channels based on a value obtained by said arithmetic operation.   
     
     
         11 . A terminal device of a multi-carrier radio communication system, comprising
 a RF part configured to obtain a radio communication variable from a base station, and   a control part configured to select, among the plurality of carriers, carriers that is to be assigned to a sub-channel of the terminal based on the obtained radio communication variable.   
     
     
         12 . The device of  claim 11 , wherein
 said RF part receives a radio resource assignment variable from the base station, and   wherein said control part selects the carriers to assigned to the sub-channel of the terminal based on the received radio resource assignment variable and the radio communication variable.   
     
     
         13 . The device of  claim 12 , wherein said control part:
 selects a prescribed sequence generating function having the radio resource assignment variable and the radio communication variable as its variables; and   generates a series of sequences indicating the carriers to be assigned to the plurality of sub-channels in accordance with the radio resource assignment variable and the radio communication variable and the prescribed sequence generating function   
     
     
         14 . The device of  claim 11 , wherein said radio communication variable is a time-varying variable. 
     
     
         15 . The device of  claim 14 , wherein said radio communication variable includes a number assigned to a data transmission unit of the radio communication system.